Number of (n+2)X(5+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 2 3 or 4.
A252340
Number of (n+2)X(5+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 2 3 or 4.
Terms
- a(0) =1202a(1) =6030a(2) =34894a(3) =184434a(4) =960912a(5) =5095514a(6) =26921266a(7) =142055830a(8) =751350674a(9) =3970616096a(10) =20965518986a(11) =110757703254a(12) =585288671536
External references
- oeis: A252340